<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Image Demo</title>
    <style type="text/css">

        html, body, ul, li{
            padding: 0;
            margin: 0;
            border: 0;
        }

        ul, li{
            list-style: none;
        }
        .wrapper{
            position: relative;
            width: 100%;
        }
        .clearfix:after{        /* 清除浮动 */
            clear: both;
            content: '';
            display: block;
        }
        .images-xs, .images-sm, .images-md, .images-lg{
            float: left;
            padding: 10px 10px;
        }
        .images-xs img{
            width: 120px;
            height: auto;
        }
        .images-sm img{
            width: 180px;
            height: auto;
        }
        .images-md img{
            width: 240px;
            height: auto;
        }
        .images-lg img{
            width: 360px;
            height: auto;
        }
    </style>
</head>
<body>
<div class="wrapper">
    <div>
        <ul class="images-box clearfix">
            <li class="images-xs">
                <img src="./static/img/demo-projects-list/1.png"/>
            </li>
            <li class="images-xs">
                <img src="./static/img/demo-projects-list/1.png"/>
            </li>
            <li class="images-xs">
                <img src="./static/img/demo-projects-list/1.png"/>
            </li>
        </ul>
    </div>
    <div>
        <ul class="images-box clearfix">
            <li class="images-sm">
                <img src="./static/img/demo-projects-list/1.png"/>
            </li>
            <li class="images-sm">
                <img src="./static/img/demo-projects-list/1.png"/>
            </li>
            <li class="images-sm">
                <img src="./static/img/demo-projects-list/1.png"/>
            </li>
        </ul>
    </div>
    <div>
        <ul class="images-box clearfix">
            <li class="images-md">
                <img src="./static/img/demo-projects-list/1.png"/>
            </li>
            <li class="images-md">
                <img src="./static/img/demo-projects-list/1.png"/>
            </li>
            <li class="images-md">
                <img src="./static/img/demo-projects-list/1.png"/>
            </li>
        </ul>
    </div>
    <div>
        <ul class="images-box clearfix">
            <li class="images-lg">
                <img src="./static/img/demo-projects-list/1.png"/>
            </li>
            <li class="images-lg">
                <img src="./static/img/demo-projects-list/1.png"/>
            </li>
            <li class="images-lg">
                <img src="./static/img/demo-projects-list/1.png"/>
            </li>
        </ul>
    </div>
</div>
</body>
</html>